Powell, 23, was arrested on a charge of aggravated assault after the incident Saturday night at the Spring Hill home of his father, Jeff Powell. According to the Hernando County Sheriff's Office, Powell went to the home, where there was a party going on, and confronted his father after a female guest said the elder Powell was allowing excessive drinking and drug use and preventing people from leaving.

After arguing with his father, the sheriff's report states, Powell retrieved his FHP-issued .40-caliber pistol and aimed it at his father, who was unarmed.

No one was injured and the guests began leaving the house during the altercation.

Powell called 911 that night but he did not mention the gun incident to them. Deputies investigating an unrelated call to the house on Tuesday were told of the incident and later arrested Powell on the felony charge.

Powell graduated from the FHP academy on Feb. 11 and was still under his one-year probationary period, said FHP Capt. Mark Welch.

Powell, who worked out of the agency's New Port Richey station, was dismissed Wednesday evening for his overall misconduct during the incident, Welch said.